September 2015
Intermediate to advanced
250 pages
6h 40m
English
Content preview from Pragmatic Scala
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Parameterized Types
As we’ve seen, not only is extending a class concise in Scala, but it’s also streamlined to alleviate some common programming errors. Generic or parameterized types further help to create classes and functions that can work with multiple different types. The types can be specified at compile time instead of code writing time, making the code more extensible without losing type safety.
Since in Scala you can create stand-alone functions, you can create parameterized functions as well. Let’s create one:
| WorkingWithObjects/Parameterized.scala | |
| | def echo[T](input1: T, input2: T) = |
| | println(s"got $input1 (${input1.getClass}) $input2 (${input2.getClass})") |
Rather than specifying the echo function’s parameter types to be some ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.